The treatment of pollution and waste of tailings has always been the call of the government to call on the people, and it is also the expectation of the green mountains and rivers. Nature will not negotiate with humans, and must find a balanced development in economy and environment. Yantai Xinhai Mining Machinery Co., Ltd., after expert research, put forward the scheme of tailings dry discharge, which was well received. Yantai Xinhai's tailings dry discharge process equipment combination includes: Xinhai dehydration and concentration hydraulic cyclone + high-efficiency deep-cone multi-cone thickener + high-efficiency multi-frequency dehydration screen, a complete set of combined unit system dehydration process equipment combination. Each equipment has a unique structural design. It can be said that it is a perfect match for the tailings dry discharge, each has its own strengths and has its own duties. Although the amount of tailings to be processed is large, this equipment combination However, it has the obvious advantages of less investment, high efficiency and low cost, making tailings dry discharge relatively easy. Among them, the high-efficiency deep-cone multi-cone thickener is the backbone of the tailings dry discharge and plays a controlling role in the equipment combination.
The thickener is generally divided into three "zones", namely the clarification zone, the settlement zone and the compression zone. An important feature of the high-efficiency vibrating deep-cone multi-cone thickener (which has applied for multiple patents) is that these three areas have been structurally designed to make their concentration and dehydration effect better and more efficient. The high-efficiency vibrating deep-cone multi-cone thickener is mainly responsible for the treatment of the overflow water of the hydrocyclone in the tailings dry discharge, and because the effect of the concentrated dehydration type hydrocyclone is very good, the overflow water is mainly mud, fine The particles are mainly, and the cyclone overflow concentration is low, so the clarification zone, settlement zone and compression zone of Yantai Xinhai high-efficiency vibrating deep cone multi-cone thickener are different. The high-efficiency deep-cone multi-cone thickener can further concentrate the overflow of the XCII dewatering and concentrating hydrocyclone. Since the high-efficiency deep-cone thickener has a large settling area and compression area, although the size of the material processed is relatively high Fine, low concentration, but can obtain higher low flow concentration and greater processing capacity.
The lower part of Yantai Xinhai high-efficiency deep-cone multi-cone thickener is equipped with a deep cone with a large cone angle, which greatly increases the compression area of ​​the thickener. Therefore, although the processed material has fine particle size and low concentration, the underflow concentration of the thickener is Very high, up to 50 ~ 70%. In addition, the high-efficiency vibrating high-cone multi-cone thickener adopts a multi-cone structure. On the one hand, the compression zone is transformed to make the underflow concentration higher. On the other hand, the height of the tank can be greatly reduced.
Yantai Xinhai high-efficiency vibrating deep cone multi-cone thickener is equipped with a large number of inclined plates in the central settlement area, which greatly increases the settlement area of ​​the thickener, effectively prevents the fine particles from floating, improves the underflow concentration, and makes the overflow water clearer . The use of inclined plates also makes the diameter of the thickener required to be relatively smaller. At the same time, the inclined plate adopts regular vibration to eliminate the problem of sticking the inclined plate. The feeder of the thickener must first pass through the degassing tank to try to get rid of the gas in the ore feed slurry, including the foaming agent contained in the tailings of the flotation mine, to reduce the attachment of the pulp particles to the bubbles as if to bring a "parachute" Settlement. The degassing tank of Yantai Xinhai high-efficiency vibrating deep-cone high-cone thickener adopts more advanced and reasonable structure, which makes the degassing effect more obvious. In addition, Yantai Xinhai's high-efficiency vibrating deep-cone multi-cone thickener is also more ingeniously set up for the center of the mine. The center of the mine is equipped with a receiving tray to make the feed slurry evenly and smoothly fall, effectively preventing the mine residue Pressing causes flipping phenomenon. The overflow weir of Yantai Xinhai high-efficiency deep-cone multi-cone thickener adopts zigzag structure, which improves the local velocity increase caused by the unevenness of the overflow weir, making the overflow of the thickener even and slow, completely eliminating the running The phenomenon of mixed sink.
Due to the good dehydration effect of Yantai Xinhai's high-efficiency deep-cone and multi-cone thickeners, the overflow water is clearer and can be returned to the process for use. The water resources are reused, which can better solve the mining development problems in water-scarce areas.
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